EP 0189833 A1 19860806 - Use of methylene azelaic acid as a corrosion inhibitor.
Title (en)
Use of methylene azelaic acid as a corrosion inhibitor.
Title (de)
Verwendung von Methylenazelainsäure als Korrosionsinhibitor.
Title (fr)
Utilisation de l'acide méthylène azélaique comme inhibiteur de corrosion.
Publication
Application
Priority
US 69719385 A 19850201
Abstract (en)
The use of methylene azelaic acid or an alkali metal salt thereof in glycol and water based automotive antifreeze formulations is described. Unlike natural dicarboxylic acids such as sebacic acid, methylene azelaic acid does not form a precipitate and drop out of solution, rendering the antifreeze unprotected against corrosion. The methylene azelaic acid component should be present in an amount of from 1.5 to 4.5 wt.% based on the glycol component.
IPC 1-7
IPC 8 full level
C09K 5/20 (2006.01); C23F 11/12 (2006.01)
CPC (source: EP US)
C09K 5/20 (2013.01 - EP US); C23F 11/126 (2013.01 - EP US)
Citation (search report)
- [A] GB 2138837 A 19841031 - DEARBORN CHEMICALS CO
- [AD] US 2726215 A 19551206 - JONES DONALD T
- [A] EP 0112756 A1 19840704 - BP CHIMIE SA [FR]
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
US 69719385 A 19850201; EP 86100827 A 19860122